Savage Diffs - Page 2 - RC-Monster Forums

ljoncp · 09:47 PM

OK guys I figured out my problem with the BP diff not fitting in the GH bulk.

I was using some honkin' 6x15x.2mm shims to shim between the bearings and the outdrives. The bearings sit very squarely and snug up against a little wall in the alloy bulks, and when I would go to close the bulk cases there was no room for a 15mm O.D. shim beside them, so they would protrude and make it so the case would not close all the way.

Lucky me, I brought home a file and an oil stone today from work, just for this job. Well I did not use them on the aluminum bulkhead like I figured i would. I ended up filing down the 15mm O.D. shim to match the O.D. of the outdrive so it wouldn't interfere with the bulkhead. Problem solved! (Yes, i filed down a shim

)

Now I have a new problem.. I finally got a perfect shim set-up so the diff spins freely and there is just a hair of play between the pinion and the ring gear. To achieve this though, I now have NO shim between the bearing and the ring gear. As soon as i put a shim there, the pinion/ring are louder when spun and just overall dont sound right.

The bearing in use is a metal shielded Boca bearing and it is the beefier of the two (8x16x5mm) for what its worth.

Will this set-up work or is the bearing going to blow out? Is there a way to get the ring gear away from the pinion without removing this shim?

Thanks a lot guys!

lincpimp · 02.14.2011, 11:25 PM

I do not have a savvy diff handy but I do not think that shim is needed?

Does the bearing race (outer part that remians stationary) touch the ring gear? If not then you are good to go. The X manual calls for the shim to be there, but that is for the plastic bulks, and it is likely there so you can remove it and place it on the other side to get the mesh right after something wears, or vice versa.

ljoncp · 02.15.2011, 12:09 AM

Quote:

Originally Posted by lincpimp

I do not have a savvy diff handy but I do not think that shim is needed?

Does the bearing race (outer part that remians stationary) touch the ring gear? If not then you are good to go. The X manual calls for the shim to be there, but that is for the plastic bulks, and it is likely there so you can remove it and place it on the other side to get the mesh right after something wears, or vice versa.

The inner bearing race (red arrow) will be in direct contact with the raised area pointed to on the ring gear w/ blue arrows.

Thanks

lincpimp · 02.15.2011, 12:54 AM

That is fine, just as long as the outer race is not in contact with the ring gear.

Jahay · 02.15.2011, 06:34 AM

shmming in a GH Bulk? i didnt have to shim at all? it was perfect... any shimming just caused binding in my bulks...

HAHA YOU GROUND DOWN A SHIM!!! never done that before... at least you found the culprit!

ljoncp · 02.15.2011, 06:44 AM

Quote:

Originally Posted by Jahay

shmming in a GH Bulk? i didnt have to shim at all? it was perfect... any shimming just caused binding in my bulks...

HAHA YOU GROUND DOWN A SHIM!!! never done that before... at least you found the culprit!

Wait wait wait.. You didnt need any shims at all? not even the amount that comes on the diff from the factory?

Thanks for re-insuring me lincpimp

Jahay · 02.15.2011, 06:49 AM

no i didnt... neither did Frddy on HPISF... I originally did shim, but didnt actually find it necessary....

But if you feel you requre it, then go for it. Everytime i reinstall mine and when rebuilding my diffs, i always make sure that my diffs either need or dont need shimming.

ljoncp · 07:44 PM

Quote:

Originally Posted by Jahay

no i didnt... neither did Frddy on HPISF... I originally did shim, but didnt actually find it necessary....

But if you feel you requre it, then go for it. Everytime i reinstall mine and when rebuilding my diffs, i always make sure that my diffs either need or dont need shimming.

Wow, i was under the impression that at least one shim was necesary between the bearings and the surfaces they were contacting to prevent wear or something. Think i must've read it somewhere on a different forum.

Thanks for clarifying!

Just took the shims completely out.. You were right!!! The diff fit perfect, perfect mesh, perfect amount of backlash, etc. Thanks man!

Jahay · 02.15.2011, 08:14 PM

it is all good bud! Happy to help! Gd luck with the diffs holding up! Im just rebuilding mine now.

ljoncp · 02.15.2011, 08:48 PM

Thanks..

I've actually only got to run my flux a total of about 10 minutes all together since i've owned it.

Blew out the whole tranny within those first 10 minutes on 6s. Also stripped a wheel out and pulled my receiver wire out!! This all happened last summer. I lost interest for a while after that experience.

Im just now getting around to tearing it down and bulletproofing it and to my surprise, Im really enjoying it.. Cant wait to run it!!!

Jahay · 02.15.2011, 08:49 PM

i love running my truck...dont get me wrong... but there is something better about piecing a truck together!

ljoncp · 02.15.2011, 11:16 PM

Quote:

Originally Posted by Jahay

i love running my truck...dont get me wrong... but there is something better about piecing a truck together!

It is definitely a blast! Especially when you have a bunch of upgrades from different companies and none of them fit together like they're supposed to so you have to improvise

Check out a little custom work i just did.. I am a beast with a file

No more nubs.. Needed to get rid of them to fit my bashcat braces.

Now i need to order some M4x40mm caphead screws. The ones provided in the Bashcat brace kit are the right size if you're using stock bulks.. But the outer bulkhead half of the GH set is not even threaded! So i've got to reach a bit deeper with my screws. Im also going to have to open up those un-threaded holes on the GH bulk half as im getting some binding/rubbing there with my screws and its rounding the crest of the threads all to hell.

When will the orders for this thing stop? lol The post office is getting sick of me

mrsnuggles · 02.17.2011, 04:40 AM

hehe aluminum bulks and bashcat braces.

talk about overkill bulletproofing.

ljoncp · 02.17.2011, 06:41 AM

Quote:

Originally Posted by mrsnuggles

hehe aluminum bulks and bashcat braces.

talk about overkill bulletproofing.

Only the rear bulk is aluminum. Im trusting your braces to keep the front plastic one together

Very impressed with the Bashcat braces! There is literally no way in hell I'll be able to break or bend these. Fitment is dead-on as well. Thanks again Mr Snuggles!

Jahay · 02.17.2011, 07:15 AM

I was so close to buying these braces... they are awesome and to see a kit put together by an SC member is awesome... so many people talk about doing things, and nothing ever materialises. SO BIG PROPS TO MR SNUGGLES!
if i wasnt carrying out the new LST Hub mod, then i would be getting these... Need to make my own thicker, wider braces...

ljon, any updated pics of the gh bulks and braces?